Cast iron is one of the hardest materials to securely weld and braze because of its unique properties. It has a crystaline structure that when heated and welded does not cool evenly and as a result cracks and inclusions will form to render the repair useless. Most repairs only last a few weeks before they will again crack at the welded seams.

There are three common ways to fix a broken cast iron casting — Arc welding (either with nickel rod, or nickel free cast iron rod), fusion welding with O/A, and brazing with O/A.

Heavy brazing itself is a skill within a skill. At IMR, Inc. our record at heavy cast iron brazing speaks proudly of itself. Many press components which appear to be un-repairable are expertly and permanently repaired by this process.

This barrel has been brazed and is ready to be machined.

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